/*
 * Copyright 2002-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.tests.beans;

import org.springframework.beans.factory.parsing.*;

import java.util.*;

/**
 * @author Rob Harrop
 * @author Juergen Hoeller
 */
public class CollectingReaderEventListener implements ReaderEventListener {

    private final List defaults = new LinkedList();

    private final Map componentDefinitions = new LinkedHashMap<>(8);

    private final Map aliasMap = new LinkedHashMap<>(8);

    private final List imports = new LinkedList();


    @Override
    public void defaultsRegistered(DefaultsDefinition defaultsDefinition) {
        this.defaults.add(defaultsDefinition);
    }

    public List getDefaults() {
        return Collections.unmodifiableList(this.defaults);
    }

    @Override
    public void componentRegistered(ComponentDefinition componentDefinition) {
        this.componentDefinitions.put(componentDefinition.getName(), componentDefinition);
    }

    public ComponentDefinition getComponentDefinition(String name) {
        return (ComponentDefinition) this.componentDefinitions.get(name);
    }

    public ComponentDefinition[] getComponentDefinitions() {
        Collection collection = this.componentDefinitions.values();
        return (ComponentDefinition[]) collection.toArray(new ComponentDefinition[collection.size()]);
    }

    @Override
    public void aliasRegistered(AliasDefinition aliasDefinition) {
        List aliases = (List) this.aliasMap.get(aliasDefinition.getBeanName());
        if (aliases == null) {
            aliases = new ArrayList();
            this.aliasMap.put(aliasDefinition.getBeanName(), aliases);
        }
        aliases.add(aliasDefinition);
    }

    public List getAliases(String beanName) {
        List aliases = (List) this.aliasMap.get(beanName);
        return aliases == null ? null : Collections.unmodifiableList(aliases);
    }

    @Override
    public void importProcessed(ImportDefinition importDefinition) {
        this.imports.add(importDefinition);
    }

    public List getImports() {
        return Collections.unmodifiableList(this.imports);
    }

}
